Harter, S., & Pike, R. G. (1981). The pictorial scale of perceived competence and acceptance for young children: Plates - first and second grades. Univerisy of Denver.
Čikaški stil citiranja (17. izdanje)Harter, Susan, i Robin G. Pike. The Pictorial Scale of Perceived Competence and Acceptance for Young Children: Plates - First and Second Grades. [Denver, Colo.]: Univerisy of Denver, 1981.
MLA način citiranja (8. izdanje)Harter, Susan, i Robin G. Pike. The Pictorial Scale of Perceived Competence and Acceptance for Young Children: Plates - First and Second Grades. Univerisy of Denver, 1981.
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